/Engine/Plugins/Experimental/Fracture/Source/FractureEngine/Public/FractureEngineClustering.h
Split any partition islands into their own partition. This will possbily increase number of partitions to exceed desired count.
void SplitDisconnectedPartitions ( [FGeometryCollection](API\Runtime\Chaos\GeometryCollection\FGeometryCollection) * GeometryCollection )